242808199 has 4 divisors (see below), whose sum is σ = 243063936. Its totient is φ = 242552464.

The previous prime is 242808197. The next prime is 242808227. The reversal of 242808199 is 991808242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242808199 - 2¹ = 242808197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242808197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126439 + ... + 128344.

It is an arithmetic number, because the mean of its divisors is an integer number (60765984).

Almost surely, 2^242808199 is an apocalyptic number.

242808199 is a deficient number, since it is larger than the sum of its proper divisors (255737).

242808199 is an equidigital number, since it uses as much as digits as its factorization.

242808199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255736.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 242808199 is about 15582.3040337429. The cubic root of 242808199 is about 623.8609217423.

Adding to 242808199 its sum of digits (43), we get a palindrome (242808242).

The spelling of 242808199 in words is "two hundred forty-two million, eight hundred eight thousand, one hundred ninety-nine".